The invention relates to a vehicle window lifting system. The system comprises a lifting mechanism, a rain shielding plate main body, rainfall detection equipment, main control equipment and vehicle window driving equipment, wherein the rainfall detection equipment is used for detecting real-time rainfalls of the outer parts of vehicle windows, the vehicle window driving equipment is used for controlling the opening amplitude of the vehicle windows, the rain shielding plate main body is embedded inside a vehicle roof in a lifting state, and is popped out of the interior of the vehicle roof andfalls down to the upper edge positions of the vehicle windows in a falling state, the lifting mechanism is used for controlling the rain shielding plate main body to be switched between the lifting state and the falling state, and the main control equipment is used for receiving the real-time rainfalls, and determining the control mode of the lifting mechanism on the rain shielding plate main body based on the real-time rainfalls. According to the vehicle window lifting system, the intelligent level of a rain shielding plate can be improved.